TPS73201DRBT Equivalent & Substitute Parts

Part Overview

The TPS73201DRBT is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 250mA output current in an 8-SON (3x3) surface mount package with integrated protection features including over-current, over-temperature, short-circuit, and reverse-polarity protection. The device operates across an input voltage range of up to 5.5V with adjustable output from 1.2V to 5.5V and a maximum dropout voltage of 0.15V at full load current.

The TPS73201DRBT carries a Last Time Buy product status, indicating this part is being phased out. Identifying equivalent and substitute parts ensures design continuity and supply chain reliability for applications currently using this regulator.

Substiute Parts

TPS73201DRBT

Texas InstrumentsIn Stock: 5726TPS73201DRBT Datasheet

Current PartRFQ

TPS73201DRBR

Texas InstrumentsIn Stock: 6429TPS73201DRBR Datasheet

Parametric EquivalentRFQ

LDK130PU-R

STMicroelectronicsIn Stock: 5615LDK130PU-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS73201DRBT are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Output configuration (Positive)
• Output type (Adjustable)
• Single regulator configuration
• Input voltage rating (5.5V maximum)
• Adjustable output voltage range capability
• Surface mount packaging
• Operating temperature range (-40°C ~ 125°C)
• Protection features (Over-current, Over-temperature minimum)

Substitute Categories:

Parametric Equivalent: Parts that maintain identical or superior electrical specifications across all critical parameters while potentially differing in packaging or manufacturer.

Manufacturer Recommended Substitute: Parts that meet functional requirements but may have variations in secondary parameters such as output current capacity, dropout voltage, or package form factor.

Parameter Comparison

Engineering Selection Recommendations

TPS73201DRBR (Parametric Equivalent): This part is the direct parametric equivalent from Texas Instruments with identical electrical specifications to the TPS73201DRBT. The primary distinction is product status: TPS73201DRBR maintains Active status, ensuring continued availability and supply chain support. Both parts share the same 8-VDFN package, pinout compatibility, and performance characteristics. Selection of TPS73201DRBR provides the most straightforward transition path for designs currently using TPS73201DRBT, with no circuit modifications required.

LDK130PU-R (Manufacturer Recommended Substitute): The LDK130PU-R from STMicroelectronics is a cross-manufacturer alternative that maintains core functional compatibility. This part offers higher output current capacity (300mA versus 250mA) and lower quiescent current (60µA versus 550µA), providing potential advantages in power efficiency. However, the LDK130PU-R differs in package form factor (6-DFN versus 8-SON), requires PCB layout redesign, and exhibits higher dropout voltage (0.4V versus 0.15V). This substitute is suitable for new designs or applications where the package change and performance trade-offs are acceptable. Existing designs using TPS73201DRBT would require circuit board modifications to accommodate the different pinout and package dimensions.

Both substitute parts maintain ROHS3 compliance and the required operating temperature range. Selection should be based on design constraints, supply availability, and whether PCB redesign is feasible.

Frequently Asked Questions (FAQ)

Q: Can TPS73201DRBR be used as a direct replacement for TPS73201DRBT without circuit modifications?

A: Yes. TPS73201DRBR is a parametric equivalent with identical electrical specifications, pinout, and package form factor. No circuit modifications are required for direct substitution.

Q: What are the key differences between TPS73201DRBT and LDK130PU-R?

A: The primary differences are: (1) Package form factor—TPS73201DRBT uses 8-SON while LDK130PU-R uses 6-DFN, requiring PCB redesign; (2) Output current—LDK130PU-R provides 300mA versus 250mA; (3) Dropout voltage—TPS73201DRBT has 0.15V dropout versus 0.4V for LDK130PU-R; (4) Quiescent current—LDK130PU-R draws 60µA versus 550µA. These differences necessitate circuit evaluation before substitution.

Q: Is LDK130PU-R suitable for existing designs using TPS73201DRBT?

A: LDK130PU-R can serve as a functional substitute only if the application tolerates the higher dropout voltage and the design can accommodate the different package pinout. PCB layout modifications are mandatory due to the different package form factor and pin configuration.

Q: Why is TPS73201DRBT marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments is discontinuing this part. Customers should transition to active alternatives such as TPS73201DRBR to ensure long-term supply chain continuity.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both TPS73201DRBR and LDK130PU-R maintain ROHS3 compliance, consistent with the original TPS73201DRBT specification.

Q: What protection features are common across all three parts?

A: TPS73201DRBT and TPS73201DRBR both include over-current, over-temperature, short-circuit, and reverse-polarity protection. LDK130PU-R includes over-current and over-temperature protection.